Product Description Specifications: 1) Standard: ASTM A554, JISG3446, CNS G3119 2) Grade: 201, 202, 304, 304L, 306, 306L 3)SQUARE OD: 15mm*15mm to 50mm*50mm 4) Wall thickness: 0. 3mm to 3. 0mm 5) Mechanical and structural stainless steel tube 6) Model no: ASTM A 554 7) Mechanical and structural stainless steel